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Audi S4 Catalytic Converters

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Universal Catalytic Converter - 2.25"

ES#4005308 - 602205 - Universal Catalytic Converter - 2.25" - 2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height - Emico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height

Brand:
Emico - Corporate Logo
ES#:
4005308
Mfg#:
602205
Ships in 3 Business Days
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter - Left

ES#2500792 - 8E0254505SXKIT - Remanufactured Catalytic Converter - Left - Price includes a $125 refundable core charge - Genuine Volkswagen Audi - Audi

Price includes a $125 refundable core charge For vehicles with automatic transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2500792
Mfg#:
8E0254505SXKIT
Ships on Nov 4, 2026
$4439.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Locking Nut - Priced Each

ES#471981 - N91130801 - Locking Nut - Priced Each - Locking nut with flange. M8x1.25mm - Genuine Volkswagen Audi - Audi Volkswagen

Locking nut with flange. M8x1.25mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471981
Mfg#:
N91130801
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter - Right

ES#2532864 - 8E0254554QXKT - Remanufactured Catalytic Converter - Right - Price includes a $210 refundable core charge - Genuine Volkswagen Audi - Audi

Price includes a $210 refundable core charge For vehicles with automatic transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2532864
Mfg#:
8E0254554QXKT
Ships on Nov 4, 2026
$4103.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Self-Locking Nut - Priced Each

ES#2588753 - N90369001 - Self-Locking Nut - Priced Each - Install new hardware with your new parts. M10x1.5 - Rein - Audi BMW Volkswagen

Install new hardware with your new parts. M10x1.5 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Used to secure the catalyst/downpipe to the turbo

Brand:
Rein - Corporate Logo
ES#:
2588753
Mfg#:
N90369001
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Install Kit

ES#2576283 - 8K0253115AKT2 - Catalytic Converter Install Kit - Contains all of the hardware you need to install new catalytic converters on your Audi - Assembled By ECS - Audi

Contains all of the hardware you need to install new catalytic converters on your Audi 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576283
Mfg#:
8K0253115AKT2
In Stock
ON SALE! SAVE 12%
$98.99

This product was last offered at the strikethrough price on
05-02-2026

$87.01 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High-Flow Catalyst Installation Hardware/Gasket Kit

ES#4858168 - 034-105-A015 - High-Flow Catalyst Installation Hardware/Gasket Kit - Includes everything you need to install or replace your 034Mototorsport High-Flow Catalyst or OEM Catalyst. - 034Motorsport - Audi

Includes everything you need to install or replace your 034Mototorsport High-Flow Catalyst or OEM Catalyst. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4858168
Mfg#:
034-105-A015
Ships in 1 Business Day
$160.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#4716227 - 8K0253115D - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Elring - Audi

Seals the catalytic converter to the downpipe 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4716227
Mfg#:
8K0253115D
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#3015657 - 8W0253115D - Exhaust Gasket - Priced Each - Between the exhaust manifold and downpipe, requires 2 - Genuine Volkswagen Audi - Audi

Between the exhaust manifold and downpipe, requires 2

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3015657
Mfg#:
8W0253115D
In Stock
$6.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter - Right

ES#2975031 - 49136 - Direct-Fit Catalytic Converter - Right - Keep your emissions in check - Magnaflow - Audi

Keep your emissions in check Not for sale or use in the state of California.
New York & Federal Compliant

Brand:
Magnaflow - Corporate Logo
ES#:
2975031
Mfg#:
49136
Ships in 1 Business Day
$1142.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Manifold Stud - Priced Each

ES#1878317 - N91187001 - Exhaust Manifold Stud - Priced Each - Allows the manifold to be secured to the cylinder head. M8x28 - Genuine Volkswagen Audi - Audi

Allows the manifold to be secured to the cylinder head. M8x28

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1878317
Mfg#:
N91187001
In Stock
$7.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#2696757 - 8K0253115K - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Genuine Volkswagen Audi - Audi

Seals the catalytic converter to the downpipe

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2696757
Mfg#:
8K0253115K
In Stock
$5.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#4501325 - 8K0253115A - Exhaust Gasket - Priced Each - Seals the manifolds to the catalytic converters - Elring - Audi

Seals the manifolds to the catalytic converters 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4501325
Mfg#:
8K0253115A
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter - Left

ES#2975030 - 49135 - Direct-Fit Catalytic Converter - Left - Keep your emissions in check - Magnaflow - Audi

Keep your emissions in check Not for sale or use in the state of California.
New York & Federal Compliant

Brand:
Magnaflow - Corporate Logo
ES#:
2975030
Mfg#:
49135
Ships in 1 Business Day
$932.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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